Doc: Explain variables required for building Routing Service examples #617

	name: Markdown documents lint

	defaults:
	run:
	shell: bash

	on:
	push:
	branches:
	- master
	- develop
	paths:
	- '*/.md'

	pull_request:
	branches:
	- master
	- develop
	paths:
	- '*/.md'

	jobs:
	lint-markdown:
	runs-on: ubuntu-20.04
	name: Lint job
	steps:
	- uses: actions/checkout@v2
	with:
	fetch-depth: 0
	- name: Add scripts to the PATH
	run: echo "${{ github.workspace }}/resources/ci_cd/" >> $GITHUB_PATH
	- name: Set up Node
	uses: actions/setup-node@v2-beta
	with:
	node-version: '14'
	- name: Set up Python
	uses: actions/setup-python@v2
	with:
	python-version: 3.7
	- name: Install necessary tools
	run: \|
	npm install markdownlint-cli@0.23.1
	- name: Perform format check in a pull request
	if: github.event_name == 'pull_request'
	working-directory: ${{ github.workspace }}
	run: \|
	base_commit="${{ github.event.pull_request.base.sha }}"
	head_commit="${{ github.event.pull_request.head.sha }}"
	linux_format.py -py -clang -r "${base_commit}...${head_commit}"
	- name: Perform format check in normal push
	if: github.event_name == 'push'
	working-directory: ${{ github.workspace }}
	run: linux_format.py -py -clang -a

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